560921 has 4 divisors (see below), whose sum is σ = 574644. Its totient is φ = 547200.

The previous prime is 560897. The next prime is 560929. The reversal of 560921 is 129065.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 270400 + 290521 = 520^2 + 539^2 .

It is a cyclic number.

It is not a de Polignac number, because 560921 - 2¹⁸ = 298777 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 560921.

It is not an unprimeable number, because it can be changed into a prime (560929) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6800 + ... + 6881.

It is an arithmetic number, because the mean of its divisors is an integer number (143661).

2⁵⁶⁰⁹²¹ is an apocalyptic number.

It is an amenable number.

560921 is a deficient number, since it is larger than the sum of its proper divisors (13723).

560921 is a wasteful number, since it uses less digits than its factorization.

560921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13722.

The product of its (nonzero) digits is 540, while the sum is 23.

The square root of 560921 is about 748.9465935566. The cubic root of 560921 is about 82.4708681962.

Adding to 560921 its reverse (129065), we get a palindrome (689986).

The spelling of 560921 in words is "five hundred sixty thousand, nine hundred twenty-one".